#include <stdio.h>
#include <conio.h>

main()
 {
    float a,b,c,d;
    printf("Program: Calculate the area of a rectanggular");
    printf("\nInput A :");
    scanf("%g",&a);
     printf("\nInput C :");
    scanf("%g",&b);
     printf("\nInput C :");
    scanf("%g",&c);
    d = a*b*c;
    printf("\nResult :%g",d);
    printf("\nBy: sirasit yiamcharoen no.7");
}